NCBISkiptomaincontentSkiptonavigationResourcesHowToAboutNCBIAccesskeysMyNCBISignintoNCBISignOutJournalListSchizophrBullv.40(2);2014MarPMC3932099SchizophrBull.2014Mar;40(2):266–268.Publishedonline2014Jan16.doi: 10.1093/schbul/sbt230PMCID:PMC3932099PMID:24436054WhitherthePsychosis-NeurosisBorderlineIanKelleher*1andMaryCannon2IanKelleher1NationalCentreforSuicideResearch&PreventionofMentalIll-Health,KarolinskaInstitutet,Stockholm,Sweden;FindarticlesbyIanKelleherMaryCannon2DepartmentofPsychiatry,RoyalCollegeofSurgeonsinIreland,EducationandResearchCentre,BeaumontHospital,Dublin,IrelandFindarticlesbyMaryCannonAuthorinformationCopyrightandLicenseinformationDisclaimer1NationalCentreforSuicideResearch&PreventionofMentalIll-Health,KarolinskaInstitutet,Stockholm,Sweden;2DepartmentofPsychiatry,RoyalCollegeofSurgeonsinIreland,EducationandResearchCentre,BeaumontHospital,Dublin,Ireland*Towhomcorrespondenceshouldbeaddressed;NationalCentreforSuicideResearch&PreventionofMentalIll-Health,KarolinskaInstitutet,Granitsvag4,17177Stockholm,Sweden;tel:+468-52480000,fax:+468-311101,e-mail:ei.iscr@rehelleknaiCopyright©TheAuthor2014.PublishedbyOxfordUniversityPressonbehalfoftheMarylandPsychiatricResearchCenter.Allrightsreserved.Forpermissions,pleaseemail:journals.permissions@oup.comThisarticlehasbeencitedbyotherarticlesinPMC.Thelandscapeofpsychosisresearchhaschangeddramaticallyoverthepast15years.Simplyput,psychoticsymptomsarefarmorecommonthanhadpreviouslybeenconsidered.1Whatismore,hallucinationsanddelusions,theclassicsymptomsof“madnessproper”(psychosis),haveemergedasrelativelycommonfeaturesofawidevarietyof(nonpsychotic)mentaldisorders.Thesefindingshaveledtoablurringoftraditionaldiagnosticboundariesbetweenpsychosisandneurosisandaquestioningofestablishednosologicalconstructs.Thebreakdownoftraditionaldivisionsbetweenpsychosisandneurosishasbeenonthehorizonforsometime.Claridge,forexample,in1972,arguedthatpsychoticsymptoms,ratherthanbeingqualitativelydistinctfromneuroticsymptoms,representedextremesof